Acquisition distribution layer having void volumes for an absorbent article

ABSTRACT

An absorbent article having a topsheet and an absorbent core material. The acquisition distribution layer is located between the topsheet and the absorbent core material. The acquisition distribution layer is made of a three dimensional apertured film that defines a large void volume space between the acquisition distribution layer and the absorbent core material. The acquisition distribution layer provides high void volume for lateral spillage during repeated insult moments because the topsheet, which is in contact with the user, is held away from dispersing fluid that is unabsorbed by saturated core material. The void volume space provides a pathway for unabsorbed fluid to flow over the top plane of saturated core regions to unsaturated regions of the core material for absorption. The void volume space allows this migration of fluid to occur without the fluid coming into contact with the topsheet, thereby avoiding a feeling of wetness for a wearer.

FIELD OF THE INVENTION

This invention relates to absorbent articles such as diapers,incontinent articles, sanitary napkins, and the like. More particularly,this invention relates to absorbent articles having a topsheet and afilm acquisition distribution layer having a void volume space.

BACKGROUND OF THE INVENTION

A variety of absorbent articles that are adapted to absorb body fluidsare well known. Examples of absorbent articles include diapers,incontinent articles, and sanitary napkins.

One problem associated with known absorbent articles is waste productleakage, which may contaminate clothing articles, such as pants, shirts,and bedding. The amount of leakage experienced by a wearer can bereduced by increasing the rate that liquid enters the absorbent core.Therefore, an absorbent article wherein liquid rapidly penetrates thetopsheet and is contained in the absorbent core will experience lessleakage than an absorbent article wherein liquid is able to run acrossthe topsheet before penetrating into the absorbent core. Consequently,run-off reduction reduces the amount of leakage associated with anabsorbent article.

Another problem associated with absorbent articles is dryness of theskin contacting surface of the article. Generally, the drier the skincontacting surface, the more comfortable the absorbent article. Attemptshave been made to reduce surface wetness in disposable diaperstructures. For example, U.S. Pat. No. 3,945,386 issued to Anczurowskion Mar. 23, 1976 and U.S. Pat. Nos. 3,965,906 and 3,994,299 issued toKarami on Jun. 29, 1976 and Nov. 30, 1976, respectively, teach diaperstructures having a perforated thermoplastic film interposed between thetopsheet and the absorbent core. U.S. Pat. No 4,324,247 issued to Azizon Apr. 13, 1982 describes an effort directed to both reducing run-offand reducing the surface wetness of absorbent articles.

In addition to the dryness of the skin contacting surface, the feel ofthe skin contacting surface is also an important consideration. Oneproblem is that some consumers do not like the plastic feel associatedwith formed films. A number of efforts have been directed at improvingthe feel of the surface of absorbent articles. One example is describedin U.S. Pat. No. 3,967,623 issued to Butterworth, et al. The Butterworthpatent teaches an absorbent pad having a facing sheet made of aperforated thermoplastic web that has an integral fibrous or suededouter surface.

An additional problem with typical absorbent articles, in particularadult incontinence diapers. As a wearer urinates a second time or more,a sensation of wetness is felt as unabsorbed fluid flows laterallythrough the topsheet from an area of saturated core material to an areaof unsaturated core material for absorption. This sensation is highlyuncomfortable and undesirable.

The products described in most of the above references, however, areless than ideal in achieving a good combination of all three desiredproperties of reduced surface run-off, improved ability to prevent afeeling of wetness of the topsheet, and improved feel.

SUMMARY OF THE INVENTION

The invention relates to an absorbent article having a topsheet and anabsorbent core material. An acquisition distribution layer is locatedbetween the topsheet and the absorbent core material. The acquisitiondistribution layer is made of a three dimensional formed film withapertures, wherein the acquisition distribution layer has a body facingside, i.e. a female side, and a garment facing side, i.e. a male side.In accordance with the invention, the acquisition distribution layerdefines a high void volume space. The large under-side void volume spaceprovides space for unabsorbed fluid to flow over the top plane ofsaturated core regions and flow to new, unsaturated regions of the corematerial without contacting the topsheet, thereby avoiding a feeling ofwetness for the user. Unabsorbed fluid results from repeated insults toa saturated zone of an absorbent core. In another embodiment, theacquisition distribution layer has at least one raised ridge extendingupwards to a higher plane on the female side. The raised ridge runs inthe machine direction for directing unabsorbed fluid to flow primarilyin the machine direction of the absorptive device to help prevent sideleakage. In another embodiment a first and a second three dimensionalapertured film forms an acquisition distribution layer having a furtherenlarged void volume space for flow of unabsorbed fluid and thatprovides a greater spacial separation between areas of containment ofwetness and the topsheet. In still another embodiment, the acquisitiondistribution layer has a high loft, which forms relatively deep cells orbuckets. When repeated insults are delivered to a saturated core region,a bucket or buckets in the insult region is filled. Subsequent insultsresult in fluid spilling over to adjacent buckets. The spill over actiondisperses the liquid volume of the insults over a larger area of thecore material so that the fluid may be absorbed by unsaturated corematerial.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is perspective view of a typical absorbent article that utilizesan acquisition distribution layer.

FIG. 2 is a cross sectional schematic view of the typical absorbentarticle of FIG. 1 taken along line 2-2.

FIG. 3 is an enlarged cross sectional view of a prior art acquisitiondistribution layer.

FIG. 4 is a plan view of a three dimensional apertured film of a firstembodiment of the invention for use as an acquisition distribution layerin the absorbent article of FIG. 1.

FIG. 5 is a cross sectional view of the absorbent article of FIG. 1taken along line 2-2 of FIG. 1 wherein the acquisition distributionlayer shown is a cross sectional view of the three dimensional aperturedfilm of FIG. 4 taken along line 5-5 of FIG. 4.

FIG. 6 is a plan view of a three dimensional apertured film of a secondembodiment of the invention for use as an acquisition distribution layerin the absorbent article of FIG. 1.

FIG. 7 is a cross sectional view of the absorbent article of FIG. 1taken along line 2-2 of FIG. 1 wherein the acquisition distributionlayer shown is a cross sectional view of the three dimensional layerapertured film of FIG. 6 taken along line 7-7 of FIG. 6.

FIG. 8 is a plan view of a three dimensional apertured film of a thirdembodiment of the invention for use as an acquisition distribution layerin the absorbent article of FIG. 1.

FIG. 9 is a cross sectional view of the absorbent article of FIG. 1taken along line 2-2 of FIG. 1 wherein the acquisition distributionlayer shown is a cross sectional view of the three dimensional layerapertured film of FIG. 8 taken along line 9-9 of FIG. 1.

FIG. 10 is a plan view of a disposable diaper utilizing the threedimensional apertured film of FIGS. 8 and 9.

FIG. 11 is a cross sectional view of the absorbent article of FIG. 1wherein the acquisition distribution layer is a multi-layer aperturedfilm of a fourth embodiment of the invention.

FIG. 12 is a cross sectional view of the absorbent article of FIG. 1wherein the acquisition distribution layer is a multi-layer aperturedfilm of a fifth embodiment of the invention.

FIG. 13 is a schematic drawing an Liquid Acquisition Apparatus that isused to test the various embodiments of the absorbent articles of FIGS.1-12.

FIG. 14 is a graphical representation of data from Table 1 that showsTotal Fluid Overflow and Inverse Loft for various samples of absorbentarticles shown in FIGS. 1-12.

FIG. 15 is a plan view at 50× magnification of Sample 2 and Sample 4 forpurposes of comparing the void volume space of the samples.

FIG. 16 is a cross-sectional view at 50× magnification of Sample 2 andSample 4 for purposes of comparing the void volume space of the samples.

DETAILED DESCRIPTION OF THE INVENTION

This invention relates to absorbent articles having a three dimensionalapertured film acquisition distribution layer. Examples of absorbentarticles include diapers, incontinent articles, sanitary napkins, andsimilar articles.

For purposes of this application, the term “absorbent article” willrefer to articles that absorb and contain body exudates. Morespecifically, the term refers to articles which are placed against or inproximity to the body of a wearer for absorbing and containing variousexudates discharged from the body. The term “absorbent article”, as usedherein, is intended to include diapers, incontinent articles, sanitarynapkins, pantiliners, and other articles used to absorb body exudates.

The term “diaper” refers to a garment typically worn by infants andincontinent persons that is drawn up between the legs and fastened aboutthe waist of the wearer. Examples of diapers from the prior art includediapers described in U.S. Pat. Re. No. 26,152, issued to Duncan, et al.on Jan. 31, 1967; U.S. Pat. No. 3,860,003 issued to Buell on Jan. 14,1975; U.S. Pat. No. 4,610,678 issued to Weisman, et al. on Sep. 9, 1986;U.S. Pat. No. 4,673,402 issued to Weisman, et al. on Jun. 16, 1987; U.S.Pat. No. 4,695,278 issued to Lawson on Sep. 22, 1987, U.S. Pat. No.4,704,115 issued to Buell on Nov. 3, 1987; U.S. Pat. No. 4,834,735issued to Alemany, et al. on May 30, 1989; U.S. Pat. No. 4,888,231issued to Angstadt on Dec. 19, 1989; and U.S. Pat. No. 4,909,803 issuedto Aziz, et al. on Mar. 20, 1990.

The term “incontinent article” refers to pads, undergarments, e.g., padsheld in place by a suspension system, such as a belt, or other device,inserts for absorbent articles, capacity boosters for absorbentarticles, briefs, bed pads, and similar devices, whether worn by adultsor other incontinent persons. Examples of incontinent articles includethose disclosed in U.S. Pat. No. 4,253,461 issued to Strickland, et al.on Mar. 3, 1981; U.S. Pat. Nos. 4,597,760 and 4,597,761 issued to Buell;the above-mentioned U.S. Pat. Nos. 4,704,115; 4,909,802 issued to Ahr,et al.; U.S. Pat. No. 4,964,860 issued to Gipson, et al. on Oct. 23,1990; and in U.S. patent application Ser. Nos. 07/637,090 and 07/637,571filed respectively by Noel, et al. and Feist, et al. on Jan. 3, 1991.

The term “sanitary napkin” refers to an article that is worn by a femaleadjacent to the pudendal region that is intended to absorb and containvarious exudates which are discharged from the body, e.g., blood,menses, and urine. Examples of sanitary napkins are disclosed in U.S.Pat. No. 4,285,343, issued to McNair on Aug. 25, 1981; U.S. Pat. Nos.4,589,876 and 4,687,478, issued to Van Tilburg on May 20, 1986 and Aug.18, 1987 respectively; U.S. Pat. Nos. 4,917,697 and 5,007,906 issued toOsborn, et al. on Apr. 17, 1990 and Apr. 16, 1991, respectively; andU.S. Pat. Nos. 4,950,264, and 5,009,653 issued to Osborn on Aug. 21,1990 and Apr. 23, 1991, respectively; and in U.S. patent applicationSer. No. 07/605,583 filed Oct. 29, 1990 in the name of Visscher, et al.

The term “pantiliner” refers to absorbent articles that are less bulkythan sanitary napkins that are generally worn by women between theirmenstrual periods. Examples of pantiliners are disclosed in U.S. Pat.No. 4,738,676 entitled “Pantiliner” issued to Osborn on Apr. 19, 1988.

The disclosures of all patents, patent applications and any patentswhich issue therefrom, as well as any corresponding published foreignpatent applications, and publications mentioned throughout this patentapplication are hereby incorporated by reference herein. It is expresslynot admitted, however, that any of the documents incorporated byreference herein teach or disclose the present invention. It is alsoexpressly not admitted that any of the commercially available materialsor products described herein teach or disclose the present invention.

Referring now to FIG. 1, a simplified representation of a typicalabsorbent article 10 is shown. It should be understood, however, thatFIG. 1 is shown for purposes of example only, and should not beconstrued to limit the particular type or configuration of absorbentarticle. As shown in FIG. 2, absorbent article 10 basically comprisestopsheet 12, backsheet 14, an acquisition distribution layer 15, and anabsorbent core 16. Absorbent core 16 has a top or body facing side 17.

The absorbent article 10 has two surfaces, a body-contacting surface orbody surface 18 and a garment-contacting surface or garment surface 20.The body surface 18 is intended to be worn adjacent to the body of thewearer. The garment surface 20 (FIG. 2) of the absorbent article 10 ison the opposite side and is intended to be placed adjacent to thewearer's undergarments or clothing when the absorbent article 10 isworn.

The absorbent article 10 has two centerlines, a longitudinal centerline22 (FIG. 1) and a transverse centerline 24 (FIG. 1). Absorbent article10 has two spaced apart longitudinal edges 26 and two spaced aparttransverse or end edges, i.e., ends 28, which together form theperiphery 30 of the absorbent article 10.

The individual components of the absorbent article 10 will now be lookedat in greater detail. Topsheet 12 is compliant, soft-feeling andnon-irritating to the wearer's skin. Further, topsheet 12 is liquidpermeable, permitting liquids to readily penetrate through itsthickness. The topsheet 12 has a body-facing side 32 (FIG. 2) and agarment-facing side 34 (FIG. 2), two longitudinal or side edges 36 andtwo end edges 38 (FIG. 1). Absorbent core 16 has a top or body facingside 17. Throughout the remainder of this application, similarcomponents will share the same numbers for all embodiments of theinvention, e.g., “topsheet” will be designated by the numeral 12 in eachembodiment.

Topsheet 12 is preferably made of a nonwoven material or of a vacuumformed film layer. Topsheet 12 may be bonded to acquisition distributionlayer 15 (FIG. 2), although in the preferred embodiment, topsheet 12 isnot bonded to but instead lays in contact with acquisition distributionlayer 15. The absorbent article of FIG. 3 utilizes a three dimensionalapertured plastic film 44 as an anti-rewet (or anti-wicking) layer.Three dimensional apertured plastic film 44 has a body facing side orfemale side 46 and a garment facing side or male side 48. Thegarment-facing side 34 of the topsheet 12 is preferably maintained inclose contact with the female side 46 of the apertured plastic film 44.The topsheet 12 and acquisition distribution layer 15 are examined ingreater detail below.

The topsheet 12 may be any nonwoven fabric that is permeable to liquids.A suitable nonwoven fabric may be manufactured from a various materialsincluding natural fibers (e.g., wood or cotton fibers), synthetic fibers(e.g., polyester, polypropylene) or a combination thereof The topsheet12 is preferably made from fibers selected from a group consisting ofpolypropylene, polyester, polyethylene, polyvinylalcohol, starch baseresins, polyurethanes, cellulose and cellulose esters.

Various manufacturing techniques may be used to manufacture nonwovenfabric for use in topsheet 12. For example, the nonwoven fabric may beresin-bonded, needle punched, spunbonded, or carded. Carded nonwovenfabrics may be thermally bonded, air-thru bonded, and spunlaced fabrics.A preferred nonwoven fabric is a thermally bonded polypropylene fabric.

A typical topsheet 12 is a non-woven fabric having a pattern of thermalbond sites. One example of a nonwoven fabric has a carded thermally dotbonded polypropylene web. The thermal bonds of such a fabric aretypically rectangularly-shaped in plan view. The bonds are typicallyarranged in staggered rows. Another typical nonwoven is a spunbondedpolypropylene web with similarly arranged thermal bonds. Still anothertypical nonwoven fabric is a carded polypropylene web that is embossedin accordance with the method taught in U.S. Pat. No. 4,781,710 issuedto Megison, et al. This nonwoven fabric has embossed and thermal bondedareas that are diamond-shaped in plan view. The diamond-shaped bonds arespaced apart and arranged in a diamond-shaped grid such as is shown inFIGS. 1 and 2 of the Megison, et al. patent. Typically, the embossingdoes not extend to the underlying core, however.

Preferably, acquisition distribution layer 15 is a perforatedthermoplastic film with tapered capillaries which has a run off percentof less than about 10 percent and which has an increased liquid flowrate through the tapered capillaries. The method of making such a filmincludes a two-fold surface treatment, which is taught by U.S. Pat. Nos.4,535,020 and 4,456,570 to Thomas et al. entitled, “Perforated Film” and“Treatment of Perforated Film”, respectively. U.S. Pat. Nos. 4,535,020and 4,456,570 are incorporated herein by reference. The method teachesthat one surface treatment is provided by adding an internal chemicaladditive, namely a surfactant, to a film forming polyolefin resin. Theadditive is compounded or otherwise mixed or blended with the resinprior to the film being formed from the resin. After the film is formedthe other surface treatment is accomplished by treating the film with acorona discharge treatment which acts on the chemical additive toprovide the perforated film with a zero or near zero percent run off.

The surfactant provides a film surface which has greater polarizabilitythan the polyolefin film would have without the surfactant being added.Higher surface polarity yields higher wettability. Although thechemically treated film is more polar than untreated film, coronadischarge treatment of the film itself provides the desired maximumwettability. Any surfactant which achieves this polarity and whichmigrates to the surface of the film may be used in this invention.

Referring now to FIG. 3, the apertured plastic film 44 is typicallylocated between the topsheet 12 and the absorbent core 16. As shown inFIG. 3, the apertured plastic film 44 is a three-dimensional structurehaving a plurality of tapered capillaries 50, each of which has a baseopening 52, and an apex opening 54. The apex of the openings 54 are inintimate contact with the absorbent core 16. Additionally, most of thesurface area of male side 48 of film 44 is in contact with core 16.

The apertured plastic film 44 is typically manufactured from a liquidimpervious, thermoplastic material. One suitable material is a lowdensity polyethylene film having a thickness of from 0.001 to 0.002inches (0.0025 to 0.0051 cm.). The thermoplastic material for use in themanufacture of a typical apertured plastic film 44 is selected from agroup consisting generally of polyethylene, polypropylene, polyvinylchloride, starch base resins, polyvinylalcohol, polyurethanes,polycaprolactone and cellulose esters, or combinations thereof

In one typical embodiment, the thermoplastic material is provided with amultiplicity of tapered capillaries 50 in a manner, size, configuration,and orientation set forth in U.S. Pat. No. 3,939,135 issued to Thompsonon Dec. 30, 1975. Other typical apertured plastic films are disclosed inU.S. Pat. No. 4,324,246, issued to Mullane, et al. on Apr. 13, 1982,U.S. Pat. No. 4,342,314, issued to Radel, et al. on Aug. 3, 1982, andU.S. Pat. No. 4,463,045, issued to Ahr, et al. on Jul. 31, 1984. Theapertured plastic film 44 can also consist of other types of aperturedplastic films that are not thermoplastic. The type of film used dependson the type of processing that the film and nonwoven components aresubjected to during the manufacture of the topsheet 12. Thermoplasticfilms are typically used when the topsheet 12 and the acquisitiondistribution layer 15 or film 44 are integrally formed into a compositestructure by melting. Other types of apertured films include, but arenot limited to hydro-formed films. Hydro-formed films are described inat least some of the following U.S. Pat. Nos. 4,609,518, 4,629,643,4,695,422, 4,772,444, 4,778,644, and 4,839,216 issued to Curro, et al.,and U.S. Pat. No. 4,637,819 issued to Ouellette, et al.

Typically, the nonwoven fabric of topsheet 12 and the apertured plasticfilm 44 are placed into a face-to-face relationship. The two componentsmay be secured or unsecured. The two components, if secured, may besecured to each other by various methods. Typical methods for securingthe nonwoven fabric and the apertured film 44 include, but are notlimited to adhesives, fusion including heat bonding and/or pressurebonding, ultrasonics, and dynamic mechanical bonding.

The adhesives can be applied in a uniform continuous layer, a patternedlayer, or an array of separate lines, spirals, beads, or spots ofadhesive. The adhesive attachment typically comprises an open patternnetwork of filaments of adhesive such as is disclosed in U.S. Pat. No.4,573,986 issued to Minetola, et al. on Mar. 4, 1986, or an open patternnetwork of filaments having several lines of adhesive filaments swirledinto a spiral pattern as illustrated by the apparatus and method shownin U.S. Pat. No. 3,911,173 issued to Sprague, Jr. on Oct. 7, 1975; U.S.Pat. No. 4,785,996 issued to Zieker, et al. on Nov. 22, 1978; and U.S.Pat. No. 4,842,666 issued to Werenicz on Jun. 27, 1989. Another methodof heat/pressure bonding that could be used is described in U.S. Pat.No. 4,854,984 issued to Ball, et al. on Aug. 8, 1989.

The nonwoven, fabric of topsheet 12 and the apertured plastic film 44may alternatively be indirectly secured. For example, the nonwovenfabric and the apertured film 44 could be secured to or through a thinlayer of airfelt, or a layer-of hydrophobic material positioned betweenthe nonwoven fabric and the apertured plastic film 44. Typically, suchadditional layer or layers are treated with a surfactant as described ingreater detail below.

The nonwoven fabric of topsheet 12 and the apertured plastic film 44 canalternatively be integrally formed into a composite structure, as taughtby Merz et al. in U.S. Pat. No. 4,995,930. The terms “composite”,“composite structure” or “combination”, as used herein, refer torelationships in which portions of the nonwoven fabric extend into thefilm 44, and vice versa so that they are integrally attached.

Referring now to FIGS. 4 and 5, a first embodiment of an improvedabsorbent article of the applicant's invention utilizes an acquisitiondistribution layer 42 made of a three dimensional apertured film 56imparted with a hexagonal pattern. Although a hexagonal pattern is usedfor purposes of illustration, it should be understood that otherpatterns may also be used for any of the films described herein.Examples of other patterns include circular, oval, elliptical,polygonal, or other suitable patterns or combinations of patterns. Thehexagonal pattern forms a plurality of adjacent hexagons or cells 58. Inthe preferred embodiment, the hexagonal pattern is based on a 8.75 meshwherein “mesh” is the number of cells 58 aligned in a one-inch length.Although a mesh count of 8.75 is preferred, a mesh count of from 2 to 25or more preferably from 4 to 15 may be used. Preferably, each cell 58 isprovided with an aperture 60 that has a large hole diameter, e.g., 59mils, which are large enough to allow insult fluids to be acquiredthrough the three dimensional apertured film 56 as rapidly as the fluidsare delivered.

Referring in particular to FIG. 5, which shows an enlarged crosssectional view of film 56 taken along line 5-5 of FIG. 4, threedimensional apertured film 56 has a body facing side or female side 62and a garment facing side or male side 64. The garment-facing side 34 ofthe topsheet 12 is preferably maintained in close contact with thefemale side 62 of the apertured plastic film 56. Preferably topsheet 12maintains in contact with film 56 but is unbonded to film 56.

As can be seen in FIG. 5, the film 56 is located between a topsheet 12and an absorbent core 16. The apertured plastic film 56 is athree-dimensional structure having a plurality of capillaries 66, eachof which has a base opening 68 and an apex opening 70. The apex openings70 of the capillaries 66 are in intimate contact with the absorbent core16, and preferably apex openings 70 are affixed to core 16 to insurethis intimate contact. It should also be noted that essentially only theapex openings 70 of the capillaries 66 are in intimate contact with thecore 16, thereby assuring that the void spaces 74 providing for lateralspillage remain substantially unencumbered. A land area 72 is formedbetween adjacent apertures 60 on the female side 62 of the aperturedplastic film 56. A void volume space 74 (FIG. 5) is formed on the maleside 64 of the apertured plastic film 56 that provides a fluidpassageway between each of the cells 58. Preferably, the ratio of voidvolume space 74 versus apex opening space 70 is 2:1. The threedimensional apertured film 56 has a loft 75, i.e. the distance betweenthe surface on the female side 62 and the planar surface on the maleside 64, of from 0.031″ to 0.125″, more preferably 0.045″ to 0.100″, andmost preferably of 0.050″. The thermoplastic material used in the film56 preferably has a density in the range of from about 0.919 g/cc to0.960 g/cc, with the more preferred range of densities being from about0.930 g/cc to 0.950 g/cc. The general melt indices range for a typicalmaterial is preferably from about 0.10 to about 8.50, with the morepreferred range typically being from about 1.5 to about 4.5.

Referring now to FIGS. 6 and 7, a second embodiment of an improvedabsorbent article of the applicant's invention utilizes an acquisitiondistribution layer 15 made of a three dimensional apertured film 76imparted with a hexagonal pattern. Although a hexagonal pattern isdiscussed herein, it should be understood that other patterns may alsobe used. Examples of other patterns include circular, oval, elliptical,polygonal, or other suitable patterns or combinations of patterns. Thehexagonal pattern forms a plurality of adjacent hexagons or cells 78. Inthe preferred embodiment, each cell 78 is 1/32″ to ½″ as measured fromthe flat to flat portion of the hexagon making up each cell 78 of thehexagonal pattern. More preferably, cells 78 of 1/16″ to ⅕″ are used.Still more preferably, cells 78 measuring ⅛″ across are used.

Referring more particularly to FIG. 7, which shows an enlarged crosssectional view of film 76 taken along line 7-7 of FIG. 6, threedimensional apertured film 76 has a body facing side or female side 82and a garment facing side or male side 84. The garment-facing side 34 ofthe top layer 12 is preferably maintained in close contact with thefemale side 82 of the apertured plastic film 76. Preferably, top layer12 maintains contact with but is unbonded to film 76.

As can be seen in FIG. 7, the film 76 is located between a top layer 12and an absorbent core 16. The apertured plastic film 76 is athree-dimensional structure having a plurality of large openings orbuckets 86, each of which has a base opening 88 and an apex opening 90.The apex openings 90 of buckets 86 are in intimate contact with theabsorbent core 16, and preferably apex opening 90 is affixed to core 16to insure this intimate contact. A land area 92 is formed betweenadjacent apertures 80 on the female side 82 of the apertured plasticfilm 76. In the honeycomb embodiment, land area 92 is preferablyrelatively narrow. The three dimensional apertured film 76 has a loft 94(FIG. 7), i.e. the distance between the surface on the female side 82and the planar surface on the male side 84, of greater than 30 mils. Inthe preferred embodiment, the loft 94 is 50 mils.

Referring now to FIGS. 8 and 9, a third embodiment of an improvedabsorbent article of the applicant's invention utilizes an acquisitiondistribution layer 15 made of a three dimensional apertured film 96imparted with a hexagonal pattern. Although a hexagonal pattern isdiscussed for purposes of illustration, it should be understood thatother patterns may also be used for any of the films discussed herein.Examples of other patterns include circular, oval, elliptical,polygonal, or other suitable patterns. The hexagonal pattern forms aplurality of adjacent hexagons or cells 98. In the preferred embodiment,the hexagonal pattern is based on a 8.75 mesh wherein “mesh” is thenumber of cells 98 aligned in a one-inch length. Although a mesh countof 8.75 is preferred, a mesh count of from 2 to 25 or more preferablyfrom 4 to 15 may be used. Preferably, each cell 98 is provided withapertures 100 that have large hole diameters, e.g., 59 mils. A pluralityof raised ridges 101 are formed on the three dimensional apertured film96. The raised ridges 101 preferably run longitudinally or parallel tolongitudinal centerline 22 (FIG. 1) of the absorbent article 10.

Referring in particular to FIG. 9, which shows an enlarged crosssectional view of film 96 taken along line 9-9 of FIG. 8, threedimensional apertured film 96 has a body facing side or female side 102and a garment facing side or male side 104. The garment-facing side 34of the topsheet 12 is preferably maintained in close contact with thefemale side 102 of the apertured plastic film 96. Preferably, top layer12 maintains contact with but is unbonded to film 96. The thermoplasticmaterial used in the film 96 preferably has a density in the range offrom about 0.919 g/cc to 0.960 g/cc, with the more preferred range ofdensities being from about 0.930 g/cc to 0.950 g/cc. The general meltindices range for a typical material is preferably from about 0.10 toabout 8.50, with the more preferred range typically being from about 1.5to about 4.5.

As can be seen in FIG. 9, the film 96 is located between topsheet 12 andan absorbent core 16. The apertured plastic film 96 is athree-dimensional structure having a plurality of capillaries 106, eachof which has a base opening 108 and an apex opening 110. The apexopenings 110 of capillaries 106 are in intimate contact with theabsorbent core 16, and preferably apex openings 110 are affixed to core16 to insure this intimate contact. It should also be noted thatessentially only the apex openings 110 of capillaries 106 are inintimate contact with the core 16, thereby assuring that the void spaces114-116 providing for lateral spillage remain substantiallyunencumbered. A land area 112 is formed between adjacent apertures 100on the female side 102 of the apertured plastic film 96. A void volumespace 114 is formed on the male side 104 of the apertured plastic film96 that provides a fluid passageway between each of the cells 98. Achannel 115 (FIG. 9) is formed on the male side 104 of each raised ridge101. An enlarged void volume space 116 is formed when the channel 115communicates with the void volume space 114 of the apertured plasticfilm 96. The three dimensional apertured film 96 has a loft 118 (FIG.9), i.e. the distance between the surface on the raised ridges 101 onfemale side 102 and the planar surface of the male side 104, in therange of 0.065, i.e., the raised ridge 101 preferably adds 0.015″ to thepreferred loft of 0.050″ for film 96. Although 0.050″ is the mostpreferred loft, a loft of from 0.031″ to 0.125″ and more preferably0.045″ to 0.100″ may be used. Raised ridges 101 may be formed byaffixing a wire around the circumference of a vacuum forming screen orby forming an elongated protrusion upon a vacuum formed screen andpassing a film over the screen in a manner known in the art. Thethermoplastic material used in the film 96 preferably has a density inthe range of from about 0.919 g/cc to 0.960 g/cc, with the morepreferred range of densities being from about 0.930 g/cc to 0.950 g/cc.The general melt indices range for a typical material is preferably fromabout 0.10 to about 8.50, with the more preferred range typically beingfrom about 1.5 to about 4.5.

A disposable diaper 120 utilizing a section of three dimensionalapertured film 96 having raised ridges 101 is shown in FIG. 10.Disposable diaper 120 has a longitudinal centerline 122 and a transversecenterline 124. It should be understood that disposable diaper 120 isshown here as an example only, and the invention described herein shouldnot be construed to be limited to disposable diapers but may alsoinclude incontinent articles, sanitary napkins, pantiliners or otherabsorbent articles.

Referring now to FIG. 11, a fourth embodiment of an improved absorbentarticle of the applicant's invention utilizes an acquisitiondistribution layer 15 made of three dimensional apertured film 56 (FIGS.4 and 5) and three dimensional apertured film 96 (FIGS. 8 and 9), whichshall be referred to as multi-layer apertured film 126. Threedimensional apertured film 56 forms the body facing sublayer 128 ofmulti-layer apertured film 126. Three dimensional apertured film 96forms the garment facing sublayer 130 of multi-layer apertured film 126.The garment-facing side 34 of the topsheet 12 is preferably maintainedin close contact with the female side 62 of the apertured plastic film56 that forms the body facing sublayer 128. Preferably, top layer 12maintains contact with but is unbonded to sublayer 128.

As can be seen in FIG. 11, the multi-layer apertured film 126 is locatedbetween a topsheet 12 and an absorbent core 16. The multi-layerapertured film 126 is a three-dimensional structure that allows fluidsto pass therethrough. The three dimensional apertured film 56 that formsthe body facing sublayer 128 is in contact with raised ridges 101 thatare formed on the sublayer 130. The apex openings 110 of the threedimensional apertured film 96 that forms the garment facing sublayer 130are preferably in intimate contact with the absorbent core 16. The voidvolume space 114 and channel 115, which form the enlarged void volumespace 116, of the apertured plastic film 96 that forms the garmentfacing sublayer 130 is complimented by the additional void volume space74 of three dimensional apertured film 56 that forms the body facingsublayer 128. A further enlarged void volume space 136 is formed by thespace between the sublayers 128 and 130 as a result of the height ofchannels 101. The multi-layer apertured film 126 has a loft 138, i.e.the distance between the female side 62 of the three dimensionalapertured film 56 that forms the body facing sublayer 128 and the planarsurface of the male side 104, of three dimensional apertured film 96.The preferred loft 138 for the multi-layer apertured film 126 is 0.90″,which is the sum of a preferred loft of 50 mils for film 96, 15 mils forraised ridges 101 and 25 mils for top layer 12. Sublayers 128 and 130 ofmulti-layer film 126 are preferably bonded together in a manner taughtby U.S. Pat. No. 5,635,275 to Biagioli, et al., entitled, “Lamination ofnon-apertured three-dimensional films to apertured three-dimensionalfilms and articles produced therefrom”. U.S. Pat. No. 5,635,275 ishereby incorporated by reference. However, the multi-layer film 126 ispreferably unbonded to topsheet 12.

Referring now to FIG. 12, a fifth embodiment of an improved absorbentarticle of the applicant's invention utilizes an acquisitiondistribution layer 15 made of three dimensional apertured film 56 (FIGS.4 and 5) and three dimensional apertured film 76 (FIGS. 6 and 7), whichshall be referred to as multi-layer apertured film 146. Threedimensional apertured film 56 forms the body facing sublayer 148 ofmulti-layer apertured film 146. Three dimensional apertured film 76forms the garment facing sublayer 150 of multi-layer apertured film 146.The garment-facing side 34 of the topsheet 12 is preferably maintainedin close contact with the female side 62 of the apertured plastic film56 that forms the body facing sublayer 148. Preferably, top layer 12maintains contact with but is unbonded to sublayer 148.

As can be seen in FIG. 12, the multi-layer apertured film 146 is locatedbetween a topsheet 12 and an absorbent core 16. However, it iscontemplated that multi-layer apertured film 146 could also functionwithout topsheet 12. The multi-layer apertured film 146 is athree-dimensional structure that allows fluids to pass therethrough. Thethree dimensional apertured film 56 that forms the body facing sublayer148 is in contact with land area 92 of three dimensional apertured film76 that forms the sublayer 150. The body facing sublayer 148 separatesthe topsheet 12 from unabsorbed fluids that spill over from bucket 86 toan adjacent bucket 86. The void volume space 74 of body facing sublayer148 and the buckets 86 of garment facing sublayer 150 form a furtherenlarged void volume space 156. The multi-layer apertured film 146 has aloft 158, i.e. the distance between the female side 62 of the threedimensional apertured film 56 that forms the body facing sublayer 148and the planar surface of the male side 84, of three dimensionalapertured film 76. The preferred loft 158 for the multi-layer aperturedfilm 146 is 70 mils, i.e., 50 mils for the garment facing sublayer 150and 20 mils for the body facing sublayer 148. Sublayers 148 and 150 ofmulti-layer film 146 are preferably bonded together in a manner taughtby U.S. Pat. No. 5,635,275 to Biagioli, et al., which is herebyincorporated by reference However, the multi-layer film 146 ispreferably unbonded to topsheet 12. The composite multi-layer aperturedfilms 126 and 146 may be constructed in accordance with the teachings ofU.S. Pat. No. 5,635,275 to Biagioli, et al., which is herebyincorporated by reference

In practice, the three dimensional apertured films 56, 76, 96 andmulti-layer apertured films 126 and 146 may be used as an acquisitiondistribution layer 15 in an absorbent article 10. Absorbent article 10is used for applications where fluid absorption is desirable. In use,body exudates, such as an urine insults from male or female babies oradults, are deposited on the absorbent article 10. The urine insults aretypically delivered in a generally singular point of fluid flow. Uponrepeated insults, an undesirable leakage or undesirable feeling ofwetness by the user may occur due to the core material 16 becomingsaturated in the repeat insult region. In other words, the absorbentcore 16 may experience an inability to absorb repeated insults in aparticular region. As a result, additional fluid insults that aredelivered to the absorbent article 10 may be unabsorbed by the core 16and remain on the top or body facing side 17 of the core layer 16Applicant's invention provides a method for the unabsorbed fluid fromthe core layer 16 to be directed to unsaturated zones of the core layer16. Narrow land areas 92 on the female side 82 of film 76 preferablyhave a small enough surface area such that fluid contained thereon isinsufficient in amount to provide a wetness sensation to the user whenportions of the topsheet 12 are momentarily wetted by the spill over ofunabsorbed fluid from one bucket 86 to an adjacent bucket 86. Whenunabsorbed fluid contacts topsheet 12 an unpleasant feeling of wetnessof topsheet 12 occurs. A wet topsheet 12 results in uncomfortable fluidcontact with the skin of a wearer.

For example, when three dimensional apertured film 56 (FIGS. 4 and 5) isused in absorbent article 10 (FIG. 1), fluid that is not absorbed orthat spills-over from core layer 16 is able to flow within void volumespace 74 to an unsaturated area of core 16. The void volume space 74 onthe male side 64 (FIG. 5) of adjacent cells 58 (FIG. 4) areinterconnected to allow a high volume of fluid to pass to unsaturatedregions of core 16 The plurality of adjacent hexagons form a largeunder-side void volume space that provides space for fluid that spillsover the top plane or body facing side 17 of saturated core regions 16and find new, unsaturated regions. The unabsorbed fluid that resultsfrom repeated insults may then flow from a saturated zone of absorbentcore material 16 and be redirected through the under-side void volumespace 74 to an unsaturated zone of the absorbent core material 16.Without the void volume space 74 of the three dimensional apertured film56, the topsheet 12, which is contact with the skin, will become wet asthe insult fluid seeks new regions to be absorbed. The male side voidvolume area 74 is a much greater total void volume area than previouslyknown anti-rewet or anti-wicking layers.

As another example, when three dimensional apertured film 76 (FIGS. 6and 7) is used in absorbent article 10 (FIG. 1), insult fluid that isdelivered to an area after core material 16 in the area has beensaturated pools within buckets 86. When a bucket 86 at the insult pointbecomes full, buckets 86 adjacent to the insult point are filled as thefluid within full bucket 86 spills over. This process is repeated asspill-over occurs between adjacent buckets 86 to accommodate the fullinsult fluid volume. Eventually, the spill-over from buckets 86 flowsinto a bucket 86 that is located proximate an area of unsaturated corematerial 16 and the fluid is absorbed. Since the spill over ofunabsorbed fluid from a bucket 86 to adjacent buckets 86 disperses theunabsorbed liquid over a larger area of core material 16 where the fluidmay be absorbed, an undesirable wetness of the topsheet 12 may beavoided. The open-cell void volume areas 86, is much more total voidvolume area than previously known film anti-rewet or anti-wickinglayers. The preferred percentages range of land areas 92 for threedimensional apertured film 76 is 5 to 20% of the total surface area. Thelarge patterned acquisition distribution layer material or threedimensional apertured film 76 also provides a greater measure of loft,e.g. greater than 30 mils and more preferably, 50 mils in the ⅛″honeycomb embodiment. The greater loft 94 or thickness between theupper-most plane and lower-most plane of the of the three dimensionalapertured film 64 provides a ‘wick-proof’ barrier or layer between thewetted core 16 and the skin contact area of a user. A greater loft 94results in an improved feeling of dryness. Since the material in thetopsheet 12 is only a small percent of the total occupied volume, thegreater the volume, the more “air cushion” that is provided next to theskin contact region.

As a still further example, when three dimensional apertured film 96(FIGS. 8 and 9) is used in absorbent article 10 (FIG. 1), insult fluidthat is not absorbed in core layer 16 is able to flow within void volumespace 114. The void volume space 114 on the male side 104 (FIG. 9) ofadjacent cells 98 (FIG. 9) are interconnected to allow a high volume offluid to pass to unsaturated regions of core 16. Additionally, raisedridges 101 form channels 115 to further accommodate unabsorbed fluidsvia enlarged void volume space 116. A further advantage of the channels115 is that the channels 115 direct unabsorbed fluids in a desireddirection, such as in the longitudinal direction, i.e., parallel tolongitudinal centerline 122 of disposable diaper 120 (FIG. 10). Bydirecting the unabsorbed fluid in the longitudinal direction, the fluidmay be directed to locations with greater amounts of unsaturated corematerial 16 as opposed to directing the fluid towards undesirablelocations such as a perimeter of the diaper. The channels 115 directfluid away from a direction that is parallel to the transversecenterline of disposable diaper 120. The raised ridges are, therefore,effective at eliminating side leakage from disposable diaper 20.

Additionally, various embodiments of acquisition distribution layer 42may be combined into a multi-layer apertured film, such as film 126(FIG. 11) or film 146 (FIG. 12). Multi-layer apertured film 126 providesa further enlarged void volume space 136 to accommodate unabsorbedfluids. The further enlarged void volume space 136 allows unabsorbedfluids to flow to regions where core material 16 is unsaturated withoutallowing the unabsorbed fluids to come into contact with the topsheet12, thereby avoiding an unpleasant feeling of wetness for the user.

Multi-layer apertured film 146 (FIG. 12) provides a further enlargedvoid volume space 156 to accommodate unabsorbed fluids. The furtherenlarged void volume space 156 allows unabsorbed fluids to spill overlands 92 from buckets 86 to adjacent buckets 86 where core material 16is unsaturated. Body facing sublayer 148, i.e. film 56, substantiallyprevents unabsorbed fluids from contacting the topsheet 12 whenunabsorbed fluids spill over land 92 from a bucket 86 of garment facingsublayer 150, i.e. film 76, to adjacent buckets, thereby furtherreducing the unpleasant feeling of wetness for the user.

The use of three dimensional apertured films 56, 76, 96, and multi-layerapertured films 126 and 146 increase the loft of the acquisitiondistribution layer 15 of the absorbent article 10. The greater loft 75,94, 118, 138 and 158 or thickness between the upper-most plane andlower-most plane of the of the three dimensional apertured films 56, 76,96, and multi-layer apertured films 126 and 146 provides a ‘wick-proof’barrier or layer between the wetted core 16 and the skin contact area ofa user. A greater loft 75, 94, 118, 138 and 158 results in an improvedfeeling of dryness. Since the material in the topsheet 12 is only asmall percent of the total occupied volume, the greater the volume, themore “air cushion” that is provided next to the skin contact region.

The large female side void volume of the “spill-over” embodimentsfacilitates dispersion of unabsorbed fluids. Preferably, for a squaremeter of film, the female side void volume is greater than 500 cm³, morepreferably greater than 750 cm³, and most preferably greater than 1000cm³. Additionally, the large male side void volume of the “spill-under”embodiments also facilitates dispersion of unabsorbed fluids.Preferably, for a square meter of film, the male side void volume ispreferably greater than 500 cm³, more preferably greater than 600 cm³,and most preferably greater than 750 cm³.

Test Data

Testing was performed using the Multiple Insult Acquisition method.Several methods are described in detail in an article by James P. Hansonin an article appearing in Nonwovens World, Fall 1997, page 57-63,entitled, “The Test Mess Part III—Credible Testing for LiquidAcquisition”, which is incorporated herein by reference.

More specifically, the applicant's test was conducted as follows.Referring now to FIG. 13, die cut samples 160 are cut from absorbentarticle 10 in an area where acquisition distribution layer 15 ispresent. The topsheet 12 and acquisition distribution layer 15 areremoved from the absorbent article 10, paying particular attention notto change the orientation of the materials. The topsheet 12 andacquisition distribution layer 15 of the core cuts or die samples 160are then randomly weighed and the average weight and standard deviationfor the weight are randomly recorded. Each die cut sample 160 is thenreconstructed by adding the absorbent core 16.

To perform the Acquisition Rate Performance on all three layers, aLiquid Acquisition Apparatus 162 is used. Apparatus 162 is made up of aplate 164 having an opening 166 in the center of the plate 164 forplacement on top of sample 160. A controlled volume chamber 168 extendsupwardly from the plate 164 for receiving a desired fluid flow rate anddosage from a fluid supply 170. An overflow pipe 172 extends outwardlyfrom the controlled volume chamber 168 at a location slightly above theplate 164.

Six samples were tested by the above described method wherein the fluidsupply 170 pumped fluid into the controlled volume chamber 168 at a rateof 7 ml/sec. Samples 1-2 are samples having an acquisition distributionlayer similar to that shown in FIG. 3 wherein the samples have varyingamounts of loft or thickness as is indicated in Table 1, below. Inparticular, Sample 1 is a prior art film in accordance with theteachings of United States Invention Registration no. H1670, to Aziz etal. having 20 mils of loft, a pattern of round or hex cells and a 22mesh count. Sample 2 is a prior art film in accordance with theteachings of United States Invention Registration no. H1670, to Aziz etal. having 23 mils of loft, a pattern of hex cells and a 25 mesh count.Samples 3 and 4 are examples of films embodying the invention of theapplication wherein Sample 3 has an acquisition distribution layer 15with male side void volume flow area similar to that shown in FIGS. 4and 5. Sample 4 is the embodiment of the invention shown in FIGS. 6 and7, i.e., the “bucket” embodiment, having a ⅛″ honeycomb pattern on theacquisition distribution layer. Sample 3 has slightly lower loft (it is49 mils vs. 51 mils) but a greater male side void volume than Sample 4.In particular, Sample 3 has a hex pattern with 49 mils loft on a 8.75mesh count. Sample 4 has a ⅛″ honeycomb pattern with 51 mils of oft onan 8 mesh count. The results are shown in Table 1, below.

Inverse Total Fluid Expanded Loft Loft Sample No. Overflow (ml) (1/mm)(mm) Mesh Sample 1 62.71 0.787402 20 22 Sample 2 59.09 0.905512 23 25Sample 3 54.15 1.929134 49 8.75 Sample 4 52.65 2.007874 51 8

The results of the test is shown graphically in FIG. 14. FIG. 14 iscomprised of a bar graph that shows fluid overflow (ml) for each sample1-4. Additionally, FIG. 14 is comprised of a line graph that shows theinverse of the expanded thickness or loft of each sample. Overflow isdefined as fluid that flows out of overflow pipe 172 of the LiquidAcquisition Apparatus 162 when 15 mL amount of fluid is delivered at 7ml/sec into controlled volume chamber 168. The fluid that does not flowthrough overflow pipe 172 is absorbed by the sample 160.

It can be seen from FIG. 14, that the greater the loft for a particularsample, the less fluid overflow that is observed for a particularsample. The films of applicant's invention, i.e. Samples 3 and 4 have amarkedly greater loft than the films having the prior art design, i.e.Samples 1 and 2. Samples 3 and 4 show a markedly lower amount of fluidoverflow. It should be noted that the total void volume for Samples 1and 2 is less than 550 cc/m² of sample material while the total voidvolume for Samples 3 and 4, which illustrate embodiments of applicant'sinvention, is more than 1000 cc/m². The preferred total void volume forapplicant's invention is greater than 750 cc/m², more preferably greaterthan 875 cc/m², and most preferably greater than 1000 cc/m².

To further illustrate the substantial increase in void volume space ofthe films of the invention over existing films, microphotographs ofSample 2 and Sample 4 are set forth in FIGS. 15 and 16. FIGS. 15 and 16show Samples 2 and 4 at 50× magnification. FIG. 15 shows a plan view ofsamples 2 and 4. FIG. 16 shows a side cross-sectional view of samples 2and 4. The substantial increase in void volume space is apparent fromeach of FIGS. 15 and 16.

Finally, microphotographs of known magnification and scale of dimensionswere taken of each of Samples 1-4 to enable empirical calculations ofvoid volume spaces. While the cells of the embodiments described hereinare best approximated as a geometric frustum, as taught in Thompson U.S.Pat. No. 4,939,135, it is within the scope of the invention to includeother cell shapes such as substantially straight walled cells, as taughtin Radel U.S. Pat. No. 4,342,314, and cells which converge to a narrowpoint and then diverge again toward the apertured end, as taught by RoseU.S. Pat. No. 4,895,749. The resulting geometric calculation for voidvolume space data for Female Side void volume, Male Side void volume,and the Total Void Volumes are shown below in Table 3.

TABLE 3 Female Male Total side side Void Sample Loft Cells/m² volumevolume Volume No. (mils) Mesh of film (cc/m²) (cc/m²) (cm³) 1 20 22872,170 189 339 528 2 23 25 1,090,755 247 236 483 3 49 8.75 131,771 294752 1046 4 51 8 105,649 1357 475 1832

It can be seen from table 3 that the “spill-under” embodiment ofapplicant's invention, demonstrated by Sample 3 has a substantiallygreater male side void volume, i.e., 752 cm³, than do any of the othersamples. The “spill-over” embodiment of applicant's invention,demonstrated by Sample 4 has a substantially greater female side volume,i.e. 1357 cm³, than do any of the other samples.

From the above, it will be appreciated that applicant's invention willreduce or eliminate the wetness sensation felt by the user during andafter repeated insults as unabsorbed fluid flows from an area ofsaturated core material to an area of unsaturated core material forabsorption. Applicant's invention redirects unabsorbed fluids tonon-saturated areas of a core material 16 while preventing substantialcontact of the unabsorbed fluids with the topsheet 12. The invention ofthe applicant prevents an unpleasant feeling of wetness of the topsheet12 while providing the ability to receive multiple insults at a singularpoint.

The present invention is illustrated herein by example, and variousmodifications may be made by a person of ordinary skill in the art. Forexample, various geometries, materials and multiple-layer filmcombinations fall within the scope of the invention. As another example,although the present invention has been described in connection withdiapers, incontinent articles, sanitary napkins, and related products,the absorbent articles of the present invention are fully applicable toother, similar products, including, without limitation, other bodycoverings where absorbent materials may be desired. Such body coveringsmay include medical drapes, medical gowns, medical smocks, ostomyappliances, feminine hygiene products, body transfer sheets, fluidcollection pouches, industrial clean room garments and other products.

It is therefore believed that the present invention will be apparentfrom the foregoing description. While the methods and articles shown ordescribed have been characterized as being preferred it should beobvious that various changes and modifications may be made therefromwithout departing from the spirit and scope of the invention as definedin the following claims.

1. An absorbent article comprising: a topsheet; an absorbent corematerial, and an acquisition distribution layer between said topsheetand said absorbent core material, wherein said acquisition distributionlayer is a three dimensional apertured film having a female side andmale side, wherein said acquisition distribution layer defines a voidvolume space including female side voids and interconnected male sidevoids, and said interconnected male side voids providing space forunabsorbed fluid to flow over said absorbent core material withoutcontacting said topsheet; said acquisition distribution layer has atleast one raised ridge extending towards said topsheet from said femaleside of said acquisition distribution layer.
 2. The absorbent articleaccording to claim 1 wherein: said raised ridge runs in a longitudinaldirection of the absorbent article for directing unabsorbed fluid toflow primarily in a desired direction with respect to the absorbentarticle for reducing side leakage from said absorbent article.
 3. Theabsorbent article according to claim 1 wherein: said acquisitiondistribution layer is a multi-layer film having a first threedimensional apertured film adjacent a second three dimensional aperturedfilm; said second three dimensional apertured film is adjacent to afemale side of said first three dimensional apertured film wherein saidfirst three dimensional apertured film has at least one raised ridge;and an enlarged void volume space is created between said second threedimensional apertured film and said first three dimensional aperturedfilm for containing unabsorbed fluid and substantially preventingcontact of the fluid with the topsheet.
 4. The absorbent articleaccording to claim 1 wherein: said topsheet is a vacuum formed filmlayer.
 5. The absorbent article according to claim 1 wherein: saidacquisition distribution layer has a plurality of cells wherein adjacentcells each have a hole that allows insult fluids to be rapidly acquiredthrough the acquisition distribution layer.
 6. The absorbent articleaccording to claim 5 wherein: said plurality of cells have a mesh countof between approximately 2 and
 25. 7. The absorbent article according toclaim 5 wherein: said plurality of cells have a mesh count of betweenapproximately 4 and
 15. 8. The absorbent article according to claim 5wherein: said plurality of cells have a mesh count of approximately 8.9. The absorbent article according to claim 5 wherein: said cells have ashape selected from a group comprising hexagonal, circular, oval,elliptical, or polygonal.
 10. The absorbent article according to claim 5wherein: said plurality of cells form a cell pattern that is acombination of at least two shapes selected from a group comprisinghexagonal, circular, oval, elliptical, or polygonal.
 11. The absorbentarticle according to claim 1 wherein: said void volume space is a totalvoid volume space of the acquisition distribution layer, wherein saidtotal void volume space is greater than 500 cm³/m².
 12. The absorbentarticle according to claim 1 wherein: said void volume space is a totalvoid volume space of the acquisition distribution layer, wherein saidtotal void volume space is greater than 750 cm³/m².
 13. The absorbentarticle according to claim 1 wherein: said void volume space is a totalvoid volume space of the acquisition distribution layer, wherein saidtotal void volume space is greater than 1000 cm³/m².
 14. The absorbentarticle according to claim 1 wherein: said void volume space is on thefemale side of the acquisition distribution layer to facilitatespill-over of unabsorbed fluid.
 15. The absorbent article according toclaim 14 wherein: said void volume space on said female side is greaterthan 500 cm³/m².
 16. The absorbent article according to claim 14wherein: said void volume space on said female side is greater than 750cm³/m².
 17. The absorbent article according to claim 14 wherein: saidvoid volume space on said female side is greater than 1000 cm³/m². 18.The absorbent article according to claim 1 wherein: said void volumespace is on the male side of the acquisition distribution layer tofacilitate spill under of unabsorbed fluid.
 19. The absorbent articleaccording to claim 18 wherein: said void volume space on said male sideis greater than 500 cm³/m².
 20. The absorbent article according to claim18 wherein: said void volume space on said male side is greater than 600cm³/m².
 21. The absorbent article according to claim 18 wherein: saidvoid volume space on said male side is greater than 750 cm³/m².
 22. Anabsorbent article comprising: a topsheet: an absorbent core material,and an acquisition distribution layer between said topsheet and saidabsorbent core material, wherein said acquisition distribution layer isa three dimensional apertured film having a female side and male side,wherein said acquisition distribution layer defines a void volume spaceincluding female side voids and interconnected male side voids, and saidinterconnected male side voids providing space for unabsorbed fluid toflow over said absorbent core material without contacting said topsheetwherein said void volume space is a total void volume space of theacquisition distribution layer, wherein said total void volume space isgreater than 500 cm³/m².
 23. The absorbent article according to claim 22wherein: said acquisition distribution layer has at least one raisedridge extending towards said topsheet from said female side of saidacquisition distribution layer.
 24. The absorbent article according toclaim 22 wherein: said acquisition distribution layer is a multi-layerfilm having a first three dimensional apertured film adjacent a secondthree dimensional apertured film; said first three dimensional aperturedfilm having said male side and a first female side; said second threedimensional apertured film is adjacent to said first female side andcomprising said interconnected male side voids; and an enlarged voidvolume space is defined by said interconnected male side voids and saidfirst female side voids for containing unabsorbed fluid andsubstantially preventing contact of the fluid with the topsheet.
 25. Theabsorbent article according to claim 22 wherein: said total void volumespace is greater than 750 cm³/m².
 26. The absorbent article according toclaim 22 wherein: said total void volume space is greater than 1000cm³/m².
 27. The absorbent article according to claim 22 wherein: thevoid volume space of said female side voids is greater than 750 cm³/m².28. The absorbent article according to claim 22 wherein: the volumespace of said female side voids is greater than 1000 cm³/m².
 29. Theabsorbent article according to claim 22 wherein: the void volume spaceof said female side voids is greater than 1250 cm³/m².
 30. The absorbentarticle according to claim 27 wherein: the void volume space of saidmale side voids is greater than 500 cm³/m².
 31. The absorbent articleaccording to claim 27 wherein: the volume space of said male side voidsis greater than 600 cm³/m².
 32. The absorbent article according to claim27 wherein: the void volume space of said male side voids is greaterthan 750 cm³/m².
 33. A method of avoiding a wetness sensation of atopsheet in an absorbent article comprising: passing fluid through anapertured acquisition distribution layer to an area proximate a corematerial; and redirecting unabsorbed fluids to an area of non-saturatedcore material via void spaces defined by a male side of said acquisitiondistribution layer material, wherein said step of redirecting unabsorbedfluids includes providing raised ridges that define channels fordirecting fluids in a desired direction of the apertured acquisitiondistribution layer.
 34. The method according to claim 33 wherein: saidstep of passing fluid through an apertured acquisition distributionlayer comprises passing fluid through a first three dimensionalapertured film and second three dimensional apertured film.